Efi 5.0 in volvo need wiring assistance for ac system


Active Member
Dec 11, 2003
Hello all, been quite some time since I've been here. I've been working on an 86 volvo with a 5.0 efi swap. I'm trying to get the ac wiring done. On the wot cut out relay, which pin should go to the compressor. I found the black and yellow wire from pin 10 on the ecm that goes to the relay, I have to run a wire from that wire to the low pressure switch too. I'm just confused about the wire that goes to the compressor. It's black and yellow as well I believe but there isn't another black and yellow wire coming from the wot relay. If I knew what pin it is on that relay I could run a wire to the compressor and get this thing going.
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